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Enhanced blue emission from ZnS–ZnO composites confined in SBA-15 |
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| Authors: | Fang Na Gu Ming Bo Yue Zheng Ying Wu Lin Bing Sun Ying Wang Jian Hua Zhu |
| Institution: | aKey Laboratory of Mesoporouse Chemistry of MOE, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China bEcomaterials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, China |
| Abstract: | A new optical material, the ZnO nanoparticles that are modified with ZnS and confined in SBA-15, has been prepared through the controllable sulfuration at relatively low temperature (40 °C) from the ZnO/SBA-15 composites. The precursor composites can be prepared through a novel path in which the zinc is well dispersed by directly grinding zinc nitrate into the as-synthesized SBA-15 occluded with template followed by calcination, and it is possible to control the conversion of ZnO to ZnS by adjusting the reaction time. The resulting samples are characterized by XRD, nitrogen adsorption–desorption and photoluminescence (PL) spectroscopy. ZnO–ZnS composites, mainly confined in the mesopore of SBA-15, exhibit dramatically enhanced blue emission at the expense of the UV emission. |
| Keywords: | ZnO ZnS Sulfuration conversion Mesoporous SBA-15 Photoluminescence |
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